Base | Representation |
---|---|
bin | 111010101101… |
… | …0011010000000 |
3 | 2010220201212021 |
4 | 1311122122000 |
5 | 30334412013 |
6 | 3015411224 |
7 | 522421501 |
oct | 165323200 |
9 | 63821767 |
10 | 30779008 |
11 | 164127a7 |
12 | a383b14 |
13 | 64b8740 |
14 | 4132ba8 |
15 | 2a7ea8d |
hex | 1d5a680 |
30779008 has 64 divisors (see below), whose sum is σ = 67473000. Its totient is φ = 13897728.
The previous prime is 30778933. The next prime is 30779011. The reversal of 30779008 is 80097703.
It can be written as a sum of positive squares in 4 ways, for example, as 27123264 + 3655744 = 5208^2 + 1912^2 .
It is a tau number, because it is divible by the number of its divisors (64).
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88018 + ... + 88366.
Almost surely, 230779008 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 30779008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33736500).
30779008 is an abundant number, since it is smaller than the sum of its proper divisors (36693992).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30779008 is a wasteful number, since it uses less digits than its factorization.
30779008 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 429 (or 417 counting only the distinct ones).
The product of its (nonzero) digits is 10584, while the sum is 34.
The square root of 30779008 is about 5547.8831999241. The cubic root of 30779008 is about 313.3898112569.
The spelling of 30779008 in words is "thirty million, seven hundred seventy-nine thousand, eight".
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